The eXtensible Catalog Project has developed four open-source software toolkits that enable libraries to build and share their own web- and metadata-focused applications on top of a service-oriented architecture that incorporates Solr in Drupal, a robust metadata management platform, and OAI-PMH and NCIP-compatible tools that interact with legacy library systems in real-time. This presentation will showcase XC's metadata processing services, the metadata "navigator" and the Drupal user interface platform. The presentation will also describe how libraries and their developers can get started using and contributing to the XC code.